Type-writing machine.



W. J. BARRON.

TYPE WRITING MACHINE.

nrmou'mn rmm NOV.14, 1907. nnxnwnn JUNE 16, 1011.

Patented July 25, 1911.

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UNTTED STATES PATENT @FFTQE.

WALTER J. BARRON, OF NEW YORK, N. Y., ASSIGNOR, BY MESNE ASSIGNMENTS, TOUNION TYPEWRITER COMPANY, OF ILION, NET/V YORK, A CORPORATION OF NEWYORK.

TYPE-WRITING IVIACHINE.

Patented July 25, 1911.

Original application fil ed July 15, 1901, Serial No. 58,385. Dividedand this application filed November 14, 1907, Serial No. 402,141.Renewed June 16, 1911. Serial No. 633,562.

T all whom it may concern:

Be it known that I, VALTER J. BARRON, citizen of the United States, andresident of the borough of Brooklyn, city of New York, in the county ofKings and State of New York, have invented certain new and usefulImprovements in Typeriting Machines, of which the following is aspecification.

The present invention relates to typewriting machines and moreparticularly to means for checking or preventing the carriage fromrebounding when suddenly arrested in its travel and the invention isespecially adapted for use in connection with tabulating mechanism toprevent the carriage from rebounding when it is arrested by thetabulating stops after having been released from control of itsescapement mechanism and allowed to run free.

The object of the invention is to provide simple and efficient means ofthe character specified.

To the above and other ends which will hereinafter appear the inventionconsists of the features of construction arrangements of parts andcombinations of devices to be hereinafter described and claimed.

In the accompanying drawings, Figure 1 is a vertical front to rearsectional View of a typewriting machine embodying my invention; thefeatures of the machine unnecessary to an understanding of the presentinvention being omitted. Fig. 2 is an enlarged detail fragmentary frontelevation showing a portion of the machine with the devices on myinvention applied thereto. Fig. 3 is an enlarged detail fragmentary sideelevation partly in section of some of the parts shown in Fig. 2.

This case is a division of my application Serial No. 68,385, filed July15th, 1901.

In the present instance the invention is shown applied to a machineresembling the No. 6 Remington machine equipped with a tabulatingmechanism similar to that known as the Gorin tabulator, though it shouldbe understood that the invention may be employed in other styles oftypewriting machines, whether of the cylindrical or flat platen varietyand that various changes may be made in adapting the invention todiffercnt styles of machines.

As shown, the frame of the machine comprises a base 1, corner posts 2and a top plate 3. Standards 4 and 5 project from the top plate andsupport guide rods 6 and 7 respectively for guiding a carriage truck 8in its movement from side to side of the machine. The carriage truckcarries rollers 9 which cooperate with the guide rod 7 in the usualmanner. A cylindrical platen 10 is mounted on a platen shaft 11 which isjournaled in bearings in a platen frame 12. The platen frame ispivotally connected to the truck and carries at the front side thereof aroller 13 which bears upon a shift rail 14, shifted in the usual mannerto effect a change in the case position of the platen. A feed rack 15 iscarried by arms 16 pivoted at 17 to the carriage truck. The feed rackcooperates with a feed pinion 18 secured to the forward end of a shaftwhich turns in a bearing 19 secured to the top plate of the machine andoperatively connected by the usual pawl and ratchet mechanism to anescapement wheel 20. Feed dogs 21 cooperate with the escapement wheel toafford a step-by-step feed movement of the car riage in the usualmanner, the feed dogs be ing carried by a dog rocker 22 actuated througha universal bar by the printing key levers (not shown), the universalbar being connected with the dog rocker by links 23. The carriagesupports a column stop bar 24 by means of rearwardly extending bracketarms 25. Adjustable column stops 26 are mounted on the column stop bar2% for cooperation with denominational stops 27 each formed as aforwardly projecting end of an upright lever 28. These levers arepivoted at 29 in a tabulator frame 30 which is secured to the frame ofthe typewriting ma chine by a yoke 31 and screws 32. The lower end ofeach of the levers 28'is pivotally connected to a push rod 33 whichextends beneath the machine and projects through an opening in adetachable frame 34 secured to the base of the machine. Each push rod isprovided with a push key 35 thereto.

30. One of the upright arms is provided with a forwardly extending; arm42 carrying a screw contact d3 which passes through a threaded openingin the arm and bears at its lower end against the rear end of a releaselever 44 pivoted at 45 to a bracket 46 secured to the top plate of themachine. The forward end of the release lever l4: is formed so as toprovide a shoe e7 situated beneath the feed rack and normally out ofcontact therewith, the weight of the torward end of the release leverbeing suiticient to move it to the normal position shown in Fig. 1.

It will be understood that by pushing any of the denon'iii'iational keys35 the associated lever 28 may be rocked on its pivot, therebyprojecting the end thereof which constitutes a denominational stop 27into the path of the column stops 26. This same movement is effective tomove the arms ilO through the contact of the actuated lever 28 with theuniversal bar 39. The rocking oil. the arms 4-0 etlects a downwardmovement of the arm 42, thus rocking the release lever 44 on its pivotand thereby elevating the feed rack 15. The etl'ect of these movementsof the parts is to disengage the feed rack from its feed pinion 18,thereby releasing the carriage from its escapement mechanism andallowing it to run free and to be propelled toward the left by thespring drum 4-8 which is connected to the carriage through a strap orband 48. hen one of the column stops 26 strikes the projecteddenominational stop 27 the carriage will be arrested. The constructionthus far described is essentially the same as that employed in the No.(3 Remington machine equipped withv the Gorin tabulator.

Upon reference more particularly to Figs. 2 and it will be seen that thefeed rack 15 is also formed as a rack or ratchet bar. Thus it isprovided with ratchet teeth i on the upper edge thereof, adjacentratchet teeth being situated a letter space distance apart in.accordance with the spacing oi the teeth on the feed rack which engagesthe feed pinion. A pawl 50 is adapted to coact with the ratchet teeth.45:9 when the feed rack is elevated in the manner hereinbet'oredescribed to disconnect the carriage "from its escapement mechanism andas indicated in dotted lines in Fig. 2. The pawl 50 is pivoted at 51 toa bracket arm 52 which extenns up in front of the feed pinion and feedrack and is secured at its lower rearwardly extending; end to thebearing 19. This bracket may be formed as a part of the bearing 19 ormay be detachably secured In the present instance I have shown one endof the bracket as provided. with a sleeve 53 which surrounds the hearing19 and is held fixed thereon by a. set screw 54. A stop pin 55 projectsfrom the rear face o1 the bracket 52 beneath the pawl 50 so that thepawl normally rests against the stop pin and is limited in its downwardmovement thereby. A. leaf spring 56 is secured at one end to a pin 57projecting from the rear of the bracket. The spring hears at its treeend against the pawl to force it down into contact with the stop Eachratchet tooth t) of: the anti-rebound rack in the present instance hasits straight or abrupt face on the right-hand side thereof and thesloping or inclined face to the letthand side and the pawl is inclineddownwardly trom right to left so as to engage the abrupt taces oi? theratchet teeth and prevent a. movement of the teed rack, and the carriagewhich carries it, 'troin left to ri ht or in the direction of the arrowin it will be understood from the foregoing d es .iption that anelevation of the teed rack 15. ct? vted by an actuation ot thetabulating' mechanisin will bring the ratchet teeth 49 into cooperationwith the pawl 50. When the carriage is moving in the direction ol itsfeed, so as to bring one of the column stops into contact with theprojected denominational stop, the pawl will slide treely over theinclined faces of the ratchet teeth, and when the tabulating; stops arebrought into engagement the rebound of the Carri: :0 will be positivelyresisted, checked or prevented by the engagement of the pawl with. theabrupt face. or" one of. the ratchet teeth. The pawl is in position toc'tlect this engaggcn'ient with a tooth 4-9 at each letterspace positionof the carriage, so that it is at once eliective to prevent l'OlIXHllitlno matter at what letterspacc position in its travel the carriage isarrested.

From the toregoing description it will be understood that, l haveprovided simple and ellicient means for preventing the rebound of thecarriage and a consequent displacement thcreof when it is suddenlyarrested in its travel, and that the pawl and ratchet; mechanismpositively prevents a backward movement or rebound ot the carllfiQQ fromthe letter space position where it is desired to a rest it.

While the pawl 50 has been shown carried hy a lined portion of themachine and the ratchet or rack bar carried by the carriaee, and thisarrangement is preferred in the particular form of machine shown anddescribed, it should be understood that these parts may be otherwisearranged and that various other changes may be made without departingfrom the spirit of the invention.

The claims in the present ca se are directed to a modifiedtorm ofconstruction not specifically claimed. in my application hereinbeforereferred to, and no claim herein is to be construed covering any of theseveral forms of my invention disclosed in said patent application,excepting the rack and pawl construction shown in Fig. 4c in saidapplication and made the subject matter of this divisional application.

\Vhile I have shown a carriage of that style of machine which carries aplaten, it should be understood that the term carriage employed in theaccompanying claims is intended to include all carriages of typcwritingmachines whether or not a platen is carried by such carriage, and thatmy invention contemplates broadly the use of pawl and rack mechanism forpreventing or checking the rebound of the carriage.

li hen I refer in the accompanying claims to carriage anti-rebounddevices that are thrown by the direct action of the key into cooperationto check a backward movement or rebound of the carriage I mean to distinguish from those anti-rebound devices which are brought into cooperationby the travel of the carriage as in the construction specificallyclaimed in my application hereinbefore referred to.

lVhat I claim as new and desire to secure by Letters Patent. is

1. In a typewrit-ing machine, the combination of a carriage, and pawland rack mechanism for checking the rebound of the carriage, one memberof the pawl and rack mechanism traveling in unison with the carriage andthe other member being maintained fixed against such traveling movement,and the pawl co-acting directly with different teeth of said rack duringthe relative traveling movement between the rack and pawl to preventrebound of the carriage at any letter space position where it may bearrested.

2. In a. typewriting machine, the combination of a carriage, a pawl anda rack normally out of cooperation, and means for bringing said pawl andrack into coopera tion when the carriage is released.

3. In a typewriting machine, the combination of a carriage, tabulatingmechanism, and pawl and rack mechanism operative to prevent rebound ofthe carriage when the tabulating mechanism is actuated, one member ofthe pawl and rack mechanism travel ing in unison with the carriage andthe other member being maintained fixed against such traveling movement.and said pawl co-acting directly with different teeth of said rackduring the relative traveling movement between the rack and pawl toprevent rebound of the carriage at any letter space position where itmay be arrested.

4. In a. typewriting machine, the combination of a carriage, and a rackand pawl, one carried by the carriage and the other by a fixed part ofthe machine, a relative move ment f the rack and pawl toward and awayfrom each other bringing about an engagement and disengagement betweenthe rack and pawl.

5. In a typewriting machine, the combination of a carriage, a feed racktherefor, an anti-rebound rack carried thereby, and a pawl cooperativewith said anti-rebound rack, said pawl being fixed against travelingmovement with the carriage.

G. in a typewriting machine, the combination of a carriage, a feed racktherefor, an antirebound rack carried thereby, and a pawl cooperativewith said anti-rebound rack and normally out of cooperation therewith,the disengagement of the feed rack bringing about a cooperation betweenthe anti-rebound rack and its pawl.

7. In a typewriting machine, the combination of a carriage, and pawl andrack mechanism for checking the rebound of the carriage, the spacing ofthe rack of said mechanism corresponding to the letter-space positionsof the carriage, one member of the pawl and rack mechanism traveling inunison with the carriage and the other member being maintained fixedagainst such traveling movement and said members co-acting directly witheach other to prevent rebound of the carriage.

S. in a typewriting machine, the combination of a carriage, and pawl andrack mechanism for checking the rebound of the car riage, the rack ofsaid mechanism being in the nature of a ratchet with the straight orabrupt face of each tooth at the right hand sine thereof and theinclined or sloping face at the left-hand side thereof, one member ofthe pawl and rack mechanism traveling in unison with the carriage andthe other member being maintained fixed against such traveling movementand said members coacting directly with eachother to prevent rebound ofthe carriage.

9. In typewriting machines, the combination with the carriage, of meansfor arresting the run of the carriage comprising cooperating stopmembers, one of which is movable into and out of line with the other,and pawl and rack mechanism for checking the rebound of said carriagewhen said stop members are brought into engagement.

10. In a .typewriting machine, the combiation with the carriage, ofmeans for ar resting the run of the carriage comprising cooperating stopmembers, and means for preventing the rebound of the carriage when saidstop members are brought into engagement comprising a rack and acooperating pawl,'said rack having teeth corresponding to the differentletter space positions of the carriage.

11. In a typewriting machine, the combination with a carriage, oftabulating mechanism for arresting the run of the carriage, saidtabulating mechanism comprising a series of column stops, and acooperating &

stop; and a pawl and rack shittable relatively by an actuation of saidtabulating mechanism into cooperative relation to prevent rebound of thecarriage.

12. In a typewriting machine, the combination of a carriage, tabulatingstops, one movable into the path of the other, a key for ellecting suchrelative movement of the stops, and carriage anti-rebound devices thatare thrown by the direct action of said key into cooperation to check abackward movement or rebound ot' the carriage.

13. In a ty iewriting machine, the combi nation or a carriage,tabulating stops, one movable into the path of the other, a key foreffecting such relative movement of the stops, and carriage anti-rebounddevices that are thrown by the direct action of said key intocooperation to check a backward move ment or rebound of the carriage,said carriage anti-rebound devices comprising a pawl and a rack.

14. In a typewriting machine, the combination with a carriage; of meansfor arresting the run of the carriage comprising stop members, one ofwhich is shiftable into and out of line with the other; and means forpreventing rebound of said carriage when said step members are broughtinto engagement comprising a rack and springheld pawl mounted forrelative movement one into engagement with the other; and a tabulatingkey for effecting relative shift ing movements between said stop membersand between the rack and pawl.

15. In a typewriting machine, the combination with a carriage, of aseries of column stops n'iounted thereon, a cooperating stop movableinto and outot line with the column stops, a rack on the carriage, and aspringheld pawl, said rack and pawl being 1nounted for relative movementinto and out of cooperation to prevent rebound ot' the carriage when oneoi? said column stops enp'ages the eooperating stop.

16. In a typewriting machine, the combination with the carriage; ofmeans for ar resting the run of the carriage comprising cooperating topmembers, one of which is shitltable into and out of. line with the otherof said members; and means for preventing the rebound of the carriagewhen said stop members are brought into engagement comprising a ackhaving; a series of teeth cor responding with the different letter spacepositions ct tie carriage and a pawl for engaging said rack. one of saidpawl and rack members being shit'table into and out of engagement withthe other; and a tabulating key for operating said shittable stop memberand for bringing said pawl and rack members into engagement.

17. In a typei riting machine, the combination with the carriage; ofmechanism for arresting the run of the carriage comprising cooperatingstop members, one of said stop members being shittable into and out ofline with the other; and means for preventing rebound ot' the carriagecomprising two cooperating parts separate from said stop members, one ofwhich parts is shittable into and out of engagement with the other, saidshiftable part being operatively connected to said shittable stop memberand moved into engagement with the other of said parts when saidshiitable stop member is moved into line with the other stop members.

18. In a typewriting machine, the combination with the carriage; ofmeans for arresting the run of the carriage comprising cooperatingstops. one of which is shittable into and out of line with the other, atabulating key for operating said shittable stop; and in 121118 forpreventing rebound of the carriage when said stops are brought intoengagementcomprising a rack and a cooperating pawl. for engaging theteeth of said rack, said pawl and rack members being normallydisengaged, and one of said members being operatively connected to saidtabulating key and arranged to be shifted thereby into engagement withthe other of said members.

19. In a typcwriting machine, the combi nation of a carriage; means forpreventing rebound of the carriage, said means comprising a pawl and arack mounted for relative movement; and a key for effecting suchrelative movement between the rack and pawl.

20. In a 'typcwritine; machine, the combination of a carriage; and meansfor preventing rebound of the carriage, said means comprising a partthat moves with the can riage and a part that is carried by the frame ofthe machine, one of said parts riding over the other throughout themovement of the carriage in the direction of its feed and said partscooperating to positively prevent a movement of the carriage in theopposite direction.

21. In a typcwriting machine, the combination of a carriage; and meansfor preventinc; rebound of the carriage, said means com-- prising apawl. and a 'ack the pawl riding over the teeth of the rack during thetravel of the carriage in the direction of its feed and positivelyengaging the rack in the 0pposite direction, 7

22. In a typewriting machine, the combination of a carriage; and meansfor pre venting rebound ot' the carriage. said means comprising a pawland a rack, the pawl, riding over the teeth of the rack during thetravel of the carriage in. the direction of its teed and positivelyengaging the rack in the opposite direction; and means operable at willtor throwing said pawl and rack into and out of operation.

23. In a typewriting machine, the combination of a carriage; and meansfor checkingthe rebound of the carriage, said means comprising a pawland a ratchet operative to move freely one over the other when thecarriage moves in the direction of its feed but to interlock and checkthe movement of the carriage in the opposite direction.

24. In a typewriting machine, the combination of a carriage; and meansfor check ing the rebound of the carriage, said means comprising a pawland a ratchet operative to move freely one over the other when thecarriage moves in the direction of its feed but to interlock and checkthe movement of the carriage in the opposite direction; and handactuated means operable at will for throw- 111g said pawl and ratchetinto and out of cooperation.

Signed at the borough or" Manhattan, city of New York, in the county ofNew York and State of New York, this 12th day of November A. D. 1907.

VALTER J. BARRON.

l Vitnesses CHARLES E. SMITH, J. B. Dawns.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

